Monodispersed macroporous architecture of nickel-oxide film as an anode material for thin-film lithium-ion batteries

被引：45

作者：

Wu, Mao-Sung ^{[1
]}

Lin, Ya-Ping ^{[1
]}

机构：

[1] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 807, Taiwan

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 05期

关键词：

Electrophoretic deposition; Nickel-oxide anode; Anodic electrodeposition; Lithium-ion batteries; Polystyrene-sphere monolayer; ELECTROCHEMICAL PERFORMANCE; NANOCRYSTALLINE; ELECTRODE; FABRICATION;

D O I：

10.1016/j.electacta.2010.11.089

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A nickel-oxide film with monodispersed open macropores was prepared on a stainless-steel substrate by electrophoretic deposition of a polystyrene-sphere monolayer followed by anodic electrodeposition of nickel oxy-hydroxide. The deposited films convert to cubic nickel oxide after annealing at 400 degrees C for 1 h. Galvanostatic charge and discharge results indicate that the nickel-oxide film with monodispersed open macropores is capable of delivering a higher capacity than the bare nickel-oxide film, especially in high-rate charge and discharge processes. The lithiation capacity of macroporous nickel oxide reaches 1620 mA h g(-1) at 1 degrees C current discharge and decreases to 990 mA h g(-1) at 15C current discharge. The presence of monodispersed open macropores in the nickel-oxide film might facilitate the electrolyte penetration, diffusion, and migration. Electrochemical reactions between nickel oxide and lithium ions are therefore markedly improved by this tailored film architecture. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2068 / 2073

页数：6

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